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A tuneable electrically-small antenna operating in the 'DC' mode

Research output: Contribution to journalArticle

Original languageEnglish
Pages (from-to)524 - 528
JournalIEE 5th European Personal Mobile Communications Conference, 2003
StatePublished - 22 Apr 2003
Event5th European Personal Mobile Communications Conference - Strathclyde, United Kingdom


The introduction of a shorting pin to the centre of an annular slot results in an additional, 'DC', mode being excited. Operation in this mode results in an electrically small structure, which is inherently narrow-band. Through the addition of a simple varactor diode we show that this narrow-band 'DC' mode may essentially be made wide-band through frequency tuning. The results presented in this paper consider the input response, 3-D radiation pattern, gain, directivity and efficiency.

Additional information

ISBN: 0852967535 Publisher: Institution of Electrical Engineers (IEE) Name and Venue of Conference: European Personal Mobile Communications Conference, Glasgow, UK Rose publication type: Conference contribution Sponsorship: The authors wish to acknowledge the financial support from the EPSRC and QinetiQ, grant no. 003011875.

Research areas

  • antenna radiation patterns, broadband antennas, microstrip antennas, mobile antennas, slot antennas, tuning, varactors


5th European Personal Mobile Communications Conference

Duration1 Apr 2003 → …
CountryUnited Kingdom

Event: Conference


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